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???
10/02/07 05:15
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#145226 - re: ADC problem in C8051F020
Responding to: ???'s previous message
More information would be good.

If I believe your comment on 2.4 V, then with the 12-bit ADC, you've got the left adjusting flag active (AD0LJST) as 65520 = 0xFFF0. Fits with a saturated ADC that is single ended and left adjusting. If so would be impossible without AD0LJST = 1 on a non-differential input. Yet 420(0x01A4) isn't left-aligned! It is almost seems like you are somehow changing the setting between readings or that you are in differential mode. But there's no way to really tell since you've not specified how you set it up or how it's connected.

List of 4 messages in thread
TopicAuthorDate
ADC problem in C8051F020            01/01/70 00:00      
   re: ADC problem in C8051F020            01/01/70 00:00      
   re: It comes around 15 mv only            01/01/70 00:00      
   re: ADC problem in C8051F020            01/01/70 00:00      

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